Uploads the current ref in the status reports. We are including this in the final upload already, but we'd also like to have it in the status reports during execution.

Moved the calculation of the ref to a function so it'll be easier to change when we have to add support for pull requests.

@marcogario, @Daverlo

Merge / deployment checklist

• Run test builds as necessary. Can be on this repository or elsewhere as needed in order to test the change - please include links to tests in other repos!
  • CodeQL using init/analyze actions
  • 3rd party tool using upload action
• Confirm this change is backwards compatible with existing workflows.
• Confirm the readme has been updated if necessary.